Apparatus for the manufacture of paper



Oct. 12, 1937. E. A. CHARLTON APPARATUS FOR MANUFACTURE- 0F"v PAPERFileapec. 1v, 1934 mvEN'roR EdqarAIerander harl lon BY M f/J AT-roRNEYPatented Oct. 12, 1.937

APrARATs FOR THE MANUFACTURE OF PAPER Y Edgar AlexanderCharlton, NewYork, N. Y., as-

.slgnor to International Paper Company, New York,fN. Y., a corporationof New York ApplicationeDecember 17, 1934, Serial No. 757,764

e 2 Claims. '(Cl. 92-45)Y This invention relates to improvements in themanufacture of paper 'andmore particularly to an improved apparatus forimparting to the v paper forming screen or wire a shake or vibration tothe end thatV a more even distribution of the libres making'up the stockwill take place.

In the manufacture of paper wherein use isY made of a paper machine ofthe Fourdrinier type a suitably prepared libre stock is deposited on amoving screen or wire and there subjected to suction or other means todrain the water in the stock from the wire, leaving the fibres-of thestock on the wire in the form of a web. Various mech-V anisms have beendevised to impart to the Fourdrinier screen or wire a shaking orvibratory motion to the end that a more even distribution of the fibreswill take place. However, all of `the known devices are,l costly to makeand are somewhat complicated in their structure. When paper is to be'produced at high speeds, it has been found inadvisable to use a shakeor vibratory action, not because such action is undesirable but becauseof the frequent mechanical breakdowns of the conventional shakemechanism because of high frequency.

It is accordingly an object of this invention to provide a device forimparting a shaking motion to the wire of a paper machine and which willrequire little change to existing paper making machinery which is simplein construction and operation.

Another object of this invention resides in the provision of a rotatablemember having raised portions which contact with the under surface ofthe Fourdrinier screen. Rotation of this device either by positivelydriving the same, or by driving it through the medium of the screen,will impart to the screen a rapid vertical vibration or shake.Theiiibrous stock on the wire, when subjected to this action, will besettled and evenly distributed on the said screen. Moreover thevibration or shake of the fibres of the stock will cause them to becomethoroughly interlaced and matted with one another.

A furtherobject of this invention resides in the provision of one ormore rotatable members provided with removable plugs which, extendingbeyond the peripheral surface ofthe roll, will, when in contact with thewire, subject the latter to a vibratory or shaking motion.` Theseremovable plugs are located at spaced intervals on the periphery of therotatable member andsubject the wireto a series of hammer-like ortapping blows across the wire. These plugs may also be ranged so thatthe tapping action will take place in series across the wire to the endthat an improved settling of the fibres of the paper'making stockthereon will take place. Y

These and other objects of this invention will become more apparentlfrom a study of the fol- 5 lowing description taken with reference vtothe accompanying drawing, in which Fig. Vl is a top plan View of theinventionshowing so much of a conventional Fourdrinier paper makingmachine as is necessary to a clear understanding of the invention; Y Y

Fig. 2 is a side elevationv of the tapping rolls;

Fig. 3 is an end elevation of the same; and Figure 4 is a sectional Viewtaken along the lines 4--4 of Figure 2.

Referring now` to the drawing in which like numerals indicate likeparts; and more specifically to Figure l, the numeral I0 represents aFourdrinier wire or paper making wire, which, at one end, is usuallypassed around a breast roll andv at 20 the other end around a couch rollby means of which the wire is normally driven. Inasmuch as the breastroll, couch roll and driving mechanism form no part of this inventionthey have not been shown. According to standard practice the Four- 25drinier screen is supported at intervals on table or tube rolls and atthe couch end of the wire the usual suction boxes may be employed- Theinvention, as will now be explained, pertains to means for imparting ashake or vi- 30 bratory movement to the stock deposited on the papermaking wire in such a manner that the fibres making'up the stock areevenly'deposited across the wire in web form and are thoroughlyinterlaced or matted together. The stock, containing a very highproportion of water and of the desired consistency,.is deposited on theWire through conventional head boxes and slice mechanisms. If desired,use may be made of a conventionalV apron and in standard practice theslice is made adjustable. VThe agitating or shake device Il constitutingthe subject matter of this invention, maybe positioned at intervalsunder the wire. Preferably these shake devices are so located withrespect to the wire as to assist in the initial formation of the paperweb. Accordingly they are positioned either between the table rolls orused as substitute for certain of the table rolls.

Each shake device comprises a hollow cylinder formed of any suitablematerial and provided at spaced Vpoints on its periphery with openingsl2. Referring specifically to Figure 4, it will be noted that theopenings are arranged so as to be complementary, that is, the openingsare arranged in pairs spaced apart., In each complernentary pair ofopenings a hollow core I3 is provided having its inner surface threadedas at I4 and I5. Plugs, constituting the actual vibration elements,comprise a stem I6 which is threaded as at I1. 'I'his stem is preferablymade of metal and has secured thereto at one end the plug I8, which ismade preferably of hard rubber. It will be appreciated, however, thatthe particular construction of the plug may vary.

Thus, the plug may constitute an integral unit, being provided with ahead and threaded portion.

A plug is inserted in each of the openings I2, the stem thread being inthreaded engagement with the thread provided in the hollow core I3.

Each Vibration device or 'shake roll is provided at each end with a stubshaft vI9 which is jour-r naled in bearing 2 carried by a frame member2|. Each of the frame members Vare secured to the frame 22 of themachine in any suitable manner, as by being bolted thereto as indicatedat 23. In order to obtain the desirable and necessary verticaladjustments of the frame members adjusting screws 24 may be used.

Preferably a plurality of shake devices or rolls are used and arepositively driven through suitable mechanism. In the embodiment shownthe shafts of the shake rolls are provided with sprockets 25 which areconnected together by means of chains 26. The entire set of shake rollsmay be driven from any suitable source of power through any single oneof the rolls. Preferably, however, each group of shake rolls will bedriven by the end roll of that group, through a chain drive 21.

In some instances, it may be further desirable to arrange the shakerolls so thatl their peripheral speed increases or decreasesprogressively from one end of the machine to the other. Moreover. Vitmay be desirable to vary the peripheral speed of `the rolls to be equalto, greater than or less than the speed of the paper making wire. Thedesired variation may be obtained by using graduated sprockets on theshake roll shafts or by using individual drive for the shake rolls. Ithas also been found desirable not to drive the shake rolls positivelybut to have them driven through contact with the wire. If such be themethod of operation desired, it will be appreciated that a drivinglmechanism for the rolls will not be used.

It will be understood by those skilled in the art that while theinvention has been described and set forth hereinbefore by Way ofexemplica- -tion with reference to a particular embodiment thereof, thatthe invention is not limited to the specific details of such embodimentor exemplioation but may be variously embodied within the scope oftheclaims hereinafter made.

What is claimed as new is:

1. In an apparatus of the class described, a paper making wire, a rollpositioned beneath said wire and provided with spaced openings, membersremovably secured in said openings and projecting beyond the peripheryof said roll into Contact with said Wire and means for rotating saidroll at a diierent rate than the rate of travel of said wire.

2. As a substitute for a table roll of a papermaking machine, a tubularroll provided at spaced intervals with openings, said openings beingarranged in pairs spaced 180 apart, a core connecting each pair ofopenings and provided adjacent each opening with locking means, a pluglocated in each opening and having means to interlock with the lockingmeans of said core, each plug extending beyond the periphery of saidroll, and said locking means being of such construction as to permitadjustment of the end of said plug with respect to the periphery of saidroll.

EDGAR, ALEXANDER CHARLTON.

